[PATCH] net: cxgb3: Fix an error code when probing the driver

[Zheyu Ma]

During the process of driver probing, probe function should return < 0
for failure, otherwise kernel will treat value >= 0 as success.

Therefore, the driver should set 'err' to -EINVAL when
'adapter->registered_device_map' is NULL. Otherwise kernel will assume
that the driver has been successfully probed and will cause unexpected
errors.

Signed-off-by: Zheyu Ma <zheyuma97@xxxxxxxxx>
---
 drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
index bfffcaeee624..662af61fc723 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -3346,6 +3346,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 	if (!adapter->registered_device_map) {
 		dev_err(&pdev->dev, "could not register any net devices\n");
+		err = -EINVAL;
 		goto out_free_dev;
 	}
 
-- 
2.25.1